Had/have the same bulge problem loading 45acp with home cast Lee microgroove lead bullets of 92/4/4 alloy. Would have one i every 10-20 wouldn't chamber correctly. Very annoying! Bought the Lee FCD and run each round through it as a final step (it has a carbide resizing ring which removes the bulge by compressing the brass/lead and it can crimp your bullet nicely).
Since I started this, I can't remember when the last time I had a jam was. It's an 'extra' step, but for the kind of reliability I'm getting now, well worth it!
Circa 1964: Rocky to Bullwinkle:
"But that trick never works!"
But Bullwinkle tries it anyway...again and again